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A true slice of 1970s watchmaking, this Zenith brings together the era’s bold case architecture with the movement that changed everything: the El Primero. Its high‑beat rhythm, smooth sweep, and historic significance make it one of the most celebrated automatic chronograph calibers ever produced. It was even the foundation for the first automatic Rolex Daytona, where Rolex modified the El Primero to create the Caliber 4030. If you know the lineage, you know how important this movement is…
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